<!DOCTYPE html>
<html>
    <head>
        <META charset="utf-8" >
        <tiTle>html5</tiTle>
    </head>
    <body>
        行元素:
        <br>
        u/i/s/b/a/span/input/br/label/sub/sup/em
        /img/button/video/audio/strong/textare/select
        /big/small/del/ins/option/mark/marquee   
        log<sub>n</sub>
        2<sup>n</sup>
        <em>1</em>
        <i>1</i>
        <strong>b</strong>
        <big>1</big>
        <ins>123</ins>
        <hr >

        块元素:
        p/div/hn(1~6)/hr/ul/ol/dl/address/dd/li
        /form/dir/menu/center/table/fieldset/pre
        /nav/blockquote

        <div></div>
    </body>
</html>